How To Get Urine Smell Out Of a Mattress: Step‑by‑Step FAQ Guide

If you’re searching for “How To Get Urine Smell Out Of a Mattress,” you probably want a method that actually works, won’t ruin your bed, and is safe to use in a bedroom. This guide walks through what to do, what to avoid, and how to prevent lingering odors in the future.

Why does urine smell stay in a mattress?

Mattresses are made of thick, absorbent layers. When urine gets in, it can soak beneath the surface, especially if it’s not cleaned right away.

Urine odor tends to linger because:

  • It can dry inside the foam or fibers, not just on top.
  • Over time, uric acid crystals and other residues can cause a persistent smell.
  • Heat and humidity can reactivate old odors, even after the stain looks dry.

That’s why surface cleaning alone often isn’t enough.

How To Get Urine Smell Out Of a Mattress: What should I do first?

1. Act quickly and blot, don’t scrub

If the spot is fresh:

  • Remove bedding immediately so the urine doesn’t spread.
  • Use clean, dry towels or paper towels to blot up as much liquid as possible.
  • Press firmly; avoid rubbing, which can push urine deeper into the mattress.

For a dried stain, you won’t be able to absorb liquid, but you can still follow the deep-clean steps below.

What cleaning solution works best for urine odor?

A common, gentle approach uses household ingredients:

  • Plain cold water
  • Mild liquid dish soap (a few drops)
  • White vinegar (for odor neutralization)
  • Baking soda (for deodorizing and moisture absorption)

Simple cleaning mix

In a spray bottle, mix:

  • 2 parts cold water
  • 1 part white vinegar
  • A small amount of mild dish soap (optional)

Shake gently before use.

Step‑by‑step: How To Get Urine Smell Out Of a Mattress

Step 1: Test a small area

Before spraying the whole area, test the solution on a small, hidden part of the mattress to make sure it doesn’t discolor or damage the fabric.

Step 2: Lightly saturate the affected area

  • Spray the urine spot and slightly around it.
  • You want it damp but not soaking, especially with memory foam, which should not be heavily saturated.

Step 3: Let it sit

  • Allow the solution to sit for about 10–15 minutes.
  • This gives it time to help break down and lift odor-causing residues.

Step 4: Blot again

  • Use clean, dry towels to press and soak up as much liquid as possible.
  • Repeat with fresh towels until they come away only slightly damp.

Step 5: Cover with baking soda

  • Sprinkle a generous layer of baking soda over the damp area.
  • Gently spread it so it covers the entire affected spot.
  • Leave it on for several hours; many people prefer to leave it overnight.

The baking soda helps pull out moisture and reduce odors.

Step 6: Vacuum thoroughly

  • Once the baking soda is completely dry, vacuum it up using an upholstery or brush attachment if available.
  • Go over the area slowly to remove as much powder as possible.

If a light odor remains, you can repeat the process once or twice.

What if the urine smell is old or very strong?

Older stains can be more stubborn because they’ve had more time to set in. For these:

  • Repeat the vinegar and baking soda process a second time.
  • Allow extra time for the solution to sit before blotting.
  • Make sure the mattress dries fully between cleanings to avoid musty smells.

If odors persist even after several attempts, some people choose to use specialized enzyme-based cleaners designed for organic stains. Always follow the instructions, test in a small area first, and avoid over‑saturating the mattress.

Is it safe to use bleach or harsh chemicals on a mattress?

Using bleach or strong chemical cleaners on a mattress is usually not recommended. They can:

  • Discolor or damage fabrics and foams
  • Leave strong chemical odors that are unpleasant in a sleeping space
  • Be difficult to rinse out completely

Gentler methods, like vinegar and baking soda or a mild, mattress-safe cleaner, are generally preferred.

How do I dry the mattress properly after cleaning?

Leaving moisture trapped inside a mattress can create new odor issues. To dry it:

  • Open windows or use a fan to improve airflow.
  • If possible, lift or prop the mattress to let air circulate underneath.
  • Avoid direct, intense heat, which may damage certain foam types.

Let it dry until it feels completely dry to the touch before putting bedding back on.

How can I prevent urine smells in the future?

A few simple steps can make accidents much easier to handle:

  • Use a waterproof mattress protector to keep liquids from soaking in.
  • Clean up any accidents as soon as possible.
  • Allow the mattress to air out sometimes by pulling back blankets during the day.

Prevention helps reduce the need for deep cleaning and minimizes lingering smells.

✔️ Quick Mattress Takeaways

Key points about How To Get Urine Smell Out Of a Mattress:

  • Blot first, don’t scrub: Remove as much liquid as you can right away.
  • Use gentle cleaners: A mix of water, white vinegar, and mild soap can help reduce odors.
  • Baking soda is your friend: It absorbs moisture and helps neutralize smells.
  • Let it dry fully: Good airflow and enough drying time are essential.
  • Repeat if needed: Older or strong odors may need more than one treatment.
  • Protect going forward: A waterproof cover and quick cleanups make future accidents easier to manage.

Using these steps, many people find they can significantly reduce or remove urine smells and keep their mattress fresher and more comfortable over time.